Dark chocolate contains phenylethylamine, a chemical believed to produce the feeling of "being in love." A study in the Journal of Sexual Medicine found that women who ate chocolate every day, had a more active sex life. Eating dark chocolate also stimulates production of endorphins, resulting in pleasurable feelings and reduced stress.
Oysters are rich in zinc, an essential mineral for testosterone production and the maintenance of healthy sperm. Even though women have less testosterone than men, it plays a key part in the female libido as well.
Watermelon is rich in L-citrulline, an amino acid that helps improve blood flow. Like Viagra, L-citrulline increases blood flow to the sexual organs, but without any negative side effects, leading some experts to ask if watermelon is the new Viagra.
Like oysters, pumpkin seeds are rich in zinc and good for the male prostate gland. Zinc is important to a woman's sex drive as well and is also a great libido booster. Pumpkin seeds are also rich in omega-3 essential fatty acids, the precursor of prostaglandins--hormone-like substances that are important for sexual health.
Sardines and other cold water fish (wild salmon, herring, trout, anchovies, etc.) are high in omega-3 fats, which increase health and sexual stamina. Omega-3's are also critical to the brain and nervous system. They improve mood, increase well-being, fight depression, give glowing, radiant skin and improve memory and brain power.
Blueberries allow the body a greater ability to release dopamine, an energizing and stimulatory neurotransmitter. By increasing brain energy production and maintaining youthful brain function, dopamine exerts an important anti-aging effect.